You want to create a read-only property ID that is set only once during object creation. Which is the best way to declare it using auto-implemented properties?

hard🚀 Application Q8 of 15

C Sharp (C#) - Properties and Encapsulation

You want to create a read-only property ID that is set only once during object creation. Which is the best way to declare it using auto-implemented properties?

Apublic int ID { get; private set; }

Bpublic int ID { private get; set; }

Cpublic int ID { get; set; }

Dpublic int ID { get; }

Step-by-Step Solution

Solution:

Step 1: Understand read-only with set during construction
Property should allow setting inside the class but not outside.
Step 2: Choose private set accessor
Using private set allows setting ID inside constructor but read-only outside.
Final Answer:
public int ID { get; private set; } -> Option A
Quick Check:
Private set = settable only inside class [OK]

Quick Trick: Use private set for read-only outside class [OK]

Common Mistakes:

MISTAKES

Using get only property which can't be set
Using public set allowing external changes
Misplacing private on get accessor

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You want to create a read-only property ID that is set only once during object creation. Which is the best way to declare it using auto-implemented properties?

Step 1: Understand read-only with set during construction

Step 2: Choose private set accessor

Final Answer:

Quick Check:

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